Wrong data being passed to Salesforce

Hi there – I’m working with Girls Inc PNW who have a license with you but I am unsure what the login for Gravity Forms support is. I’m hoping you can help me.

I am trying to set up to contact Salesforce feeds from one Gravity form. It is working almost perfectly except when I try to match with an email (only one of the feeds uses the email field)- it says the email i have entered is invalid because it seems to be passing along the Salesforce ID of the contact created by the other feed. I am so confused! Any help???

I have matched the Form Email field with the preferred email in Salesforce.
I am using the preferred email as my matching key
In the entry record, it says that I have input a legit email
However, the error from Salesforce is reading:

Error when adding to Salesforce (Contact): Personal email: Invalid Email Address: [insert the Salesforce ID of the OTHER contact being created by the the other Salesforce feed from this form]

Any help is appreciated!

Thanks!